[WC-1415]: Update momentjs in calendar web

[iobuhov]

Description

This PR does two things:

• Fix build and release scripts for calendar-web
• Prepare calendar-web v1.0.14 release

Pull request type

• No code changes (changes to documentation, CI, metadata, etc)
• Dependency changes (any modification to dependencies in package.json)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Test related change (New E2E test, test automation, etc.)

What should be covered while testing?

• Probably build and release commands

[HedwigAR]

Hey, looks like there was a bit more changed than a library update. I see the package json was changed due to a pluggable widget tools update so I get that. Why was the build.ts added?

[iobuhov]

Why was the build.ts added?

As you may noticed, calendar-web is located in packages/customWidgets and this package is still use webpack under the hood. build.ts was added because I simplified widget build and removed dependency on gulp.
P.S. TLDR; We need build.ts because this widget is not uses pluggable-widgets-tools yet. Once this widget will be migrated to "pluggable" we will remove this script.

[HedwigAR]

Alright! I didn't actually notice it was in customWidgets, thanks for the explanation!